Application of RFID real-time positioning and tracking system in Shanghai Jiading Mental Health Center
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Section 1 Project background
1 Mental illness background
At present, there are about 16 million patients with severe mental illnesses in the country, of which about 250,000 die by suicide each year. The total burden of mental illness has leapt to the top of all diseases. Experts believe that the current treatment and social living conditions of mental patients in our country are still at a relatively low level. The whole society should give mental patients sufficient humanistic care, and treat them with more respect, care and kindness from the government, society and law. Eliminate discrimination and enable more mental patients to receive good treatment and living conditions.
2 Background of Mental Health Center
Shanghai Jiading District Mental Health Center is located in Wangxin Town, Jiading District. It is a second-level mental health specialist hospital in Shanghai. It is responsible for the tasks of medical treatment, teaching, scientific research, prevention, rehabilitation, psychological consultation and foreign academic exchanges of mental health in the whole district. Jiading District Disease Prevention and Control Mental Health Sub-center, Jiading District Psychological Counseling Clinic, District Drug Treatment and District Youth Internet Addiction Treatment are affiliated with this center.
At present, the center has nearly 500 patients with mental illnesses, and the number of patients is constantly expanding. Existing medical information facilities are unable to meet the center’s growing information needs, and the quality and efficiency of the center’s medical service management are also correspondingly restricted. There is an urgent need to expand more advanced information methods to assist the center in more comprehensive services and management.
Section 2 Construction Content
1-1 Radio Frequency Identification Coverage System
System principle
The APS real-time positioning and tracking system uses RFID (electronic tag) applications, and uses electronic tags as the most advanced identification code at present. It has the characteristics of not easy to break, reliable data, long service life, and long effective communication distance. It is an alternative to barcode and infrared identification. The best choice. Install it on the controlled target to be the unique identification of the target for tracking and positioning.
Electronic tag (RFID) technology is a non-contact automatic identification technology. Its basic principle is to use radio frequency signals and their spatial coupling and transmission characteristics to realize automatic machine identification of stationary or moving items to be identified.
The radio frequency identification system generally consists of two parts, namely the electronic tag and the reader. In the application, the electronic tag is attached to the object, equipment, and person to be identified. The reader is used to automatically remove the electronic tag in the It is agreed that identification information is taken out or specific information is written, so as to realize the function of automatically identifying items or automatically collecting item identification information.
Because RFID does not require a light path between the tag and the reader, it avoids the shortcomings of other automatic identification systems (such as bar codes). This ensures that the RFID system can be used in harsh environments, such as dust, dirt, high humidity, and poor visibility environments. The biggest advantage of RFID is that it can still get a satisfactory read and write speed under the above-mentioned harsh environment. In most cases, it can respond within 100 milliseconds. In addition, the reading and writing of RFID is completely automatic and transparent. It does not require manual scanning of tracked objects, nor does it require activation of magnetic stripe readers, IC card readers, etc. like other contact tag technologies.
System composition
The main components are as follows:
APS real-time positioning and tracking system center Server (database and background service program);
APS user application service terminal;
APS network management subsystem;
Wireless identification base station (used to track the distribution of targets in the controlled area);
Handheld PDA electronic tag reader (optional, used for manual tracking and searching of targets, an effective supplement to real-time deployment control);
Wristband electronic label (identifying target).
System functions
Dynamic display function of real-time partition target:
1) Query and display the number, distribution and identity of targets in the controlled area at any time;
2) Query the current status of one or more controlled targets in the area;
3) Multi-point sharing of information can be realized for multiple departments and leaders to view at different locations at the same time;
Forbidden zone alarm function:
For the designated restricted area, if there is unauthorized entry, a real-time alarm will be issued, and the target and identity of the restricted area will be displayed.
Abundant control target attendance ability:
It can perform statistics on the goals in and out of the control area, achieve the goal attendance records, and establish various information reports of the goals (such as: time report, attendance monthly report, overtime report, absence report, etc.).
Emergency control:
Once there is an emergency, the host computer can immediately display the target number, information, location and historical situation of the site and other information, which greatly improves the efficiency and effectiveness of the safety management work.
Radio frequency point coverage map
Through the RFID system, a green protection net is formed.
System architecture diagram
System network and equipment architecture diagram
System alarm principle and schematic diagram
As shown in the figure above: the reader is fixed at different predetermined positions and has a larger receiving range; when the electronic tag enters the working range of the reader, the reader will receive the signal sent by the electronic tag, according to various After the reported data is analyzed, the system can determine the area where the electronic tag is located, so as to realize the range positioning of the electronic wristband and alarm.
Sound and light intelligent alarm system
Intelligent sound and light alarm is a very key link of this system. Intelligent sound and light alarm changes the simple single point independent alarm mode in the past. It adopts central system intelligent control and strategy distribution. The specific targeted design is as follows:
All doors are equipped with sound and light intelligent alarm system
Install independent alarm controllers in the central computer room, patient building computer room and guard room respectively
Synchronous sound and light alarm at the door, and light alarm on the building body (to reduce the mental impact of the alarm on the patients)
Strategy deployment through the system, alarm conditions can be changed at any time
Electronic fence protection system
The electronic fence system uses the front-end alarm to quickly and accurately detect the abnormal state of the scene, and then notify the system control host in time after being coded by the alarm collector. The system control host computer should be based on the set system automatic response procedure, and should have a built-in dialer to connect to the city 110 alarm network. The system will take automatic and manual response measures to the alarm signal, record the alarm signal one by one (including the response method, time, and date), and generate a log file for future inquiries.
The detector outputs a pulsed electric frequency signal, which has two parts: transmitting and receiving, thereby forming positive and negative loops on the fence. When an intruder touches the damaged fence and causes a short circuit or open circuit somewhere, the detector will send out an alarm signal. When the power supply or battery energy is insufficient, the detector will also send out an alarm signal.
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